I came across this via Twitter - It's a little odd for me to answer this because I like to wear perfume to dinstinguish myself but I know that when I was in High School a lot of us gals would wear the same perfumes because we would just use the same bottle.
I think True Religion for women or Roxy's original perfume are pretty subtle yet smell nice. Lighter scents made by clothing companies like The Gap sometimes have nice ones that aren't too loud. I haven't tried anything from Victoria's Secret by I have heard some nice things.
Smelling good and common? Something fresh and clean maybe? Clean by Clean is fresh. If you like Lavender, Cadley Island makes a really nice scent called 'Lavender'.
Demeter Library fragrance is nice and it doesn't stay on too long. It's more like a cologne. It kinda smells like paper strawberries. It's really pretty and subtle.
That's all I think I have in mind at this point...Hope it helps!